Smart thermostat coaster



FIG. 1 is a front, left side, top perspective view of a smart thermostat coaster showing my new design;

FIG. 2 is a rear, left side, bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a rear, left side, top perspective view thereof of the smart thermostat coaster showing its connection to an electrical power cord.

The broken lines depict environment with which the smart thermostat coaster may be used and which form no part of the claimed design. 

CLAIM The ornamental design for a smart thermostat coaster, as shown and described. 